. Write a simple calculator program calc.c, that prompts the user a first operand, an operator, and a second operand, then computes the result. Use a switch statement to decide whether to perform addition, subtraction, multiplication, or division based on the operators +, -, *or / characters. Hint: the argument of the switch statement, the operator, is a character data type (char). Sample output: Enter x, operator, y: 12 + 30 12.000000+30.000000 = 42.000000 Enter x, operator, y: 5 3 5.000000*3.000000 = 15.000000 Enter x, operator, y: 5 * 3 5.000000*3.000000 = 15.000000 Enter x, operator, y: 7/2 7.000000/2.000000 = 3.500000 Enter x, operator, y: 120 can't divide by 0, buddy! Enter x, operator, y: 12 % 6 Invalid operator!